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The emerging High-Efficiency Video Coding (HEVC) standard has introduced a number of new coding tools, such as a quad-tree based coding unit (CU). The quadtree-structured coding unit achieves significant coding efficiency improvements compared to H264/AVC. However, the complexity of CU depth decision associated with Rate-Distortion (R-D) cost computation dramatically increased. In order to alleviate...
Anycast is an internet addressing protocol where multiple hosts share the same IP-address. A popular architecture for modern Content Distribution Networks (CDNs) for geo-replicated HTTP-services consists of multiple layers of proxy nodes for service and co-located DNS-servers for load-balancing on different proxies. Both the proxies and the DNS-servers use anycast addressing, which offers simplicity...
To investigate the CT findings of gastrocolic ligament involved by acute pancreatitis(AP) and study the correlation between CT findings and CT Severity Index (CTSI) of AP. Methods: Seventy-nine patients with AP were retrospectively reviewed. Balthazar's CT classification of all the patients' was C grade or more. Emphasis was placed on the following findings: the CTSI, the thickness and density of...
The italic detection and slant rectification is a key step of optical character recognition (OCR). In this paper, a novel method is proposed to detect and rectify italic characters in Chinese advertising images. Based on observations on structures of many characters, the centroid angle is proposed and a statistical study on it is presented. According to the statistical results, the centroid angle...
The Matched correlation filter based on FPGA is designed for quasi real-time processing of impact acceleration signal in this paper. The design integrates match-filtering algorithm with correlation algorithm, proposing matched correlation algorithm. According to this algorithm, the design uses two Radix-4 FFT modules to complete the correlation operations, using single sine wave as matching model...
Rolling element bearings are widely used in various rotary machines. Accordingly, a reliable bearing fault detection technique is critically needed in industries to prevent these machines' performance degradation, malfunction, or even catastrophic failures. Although a number of approaches have been reported in the literature, bearing fault detection, however, still remains a very challenging task...
In this paper, we present an FPGA implementation of a low complexity affine projection (AP) adaptive filtering algorithm based on a novel low complexity recursive filtering technique and filter update that is incorporated in dichotomous coordinate descent iterations. This adaptive algorithm is simple for finite precision implementation, requires small chip resources, and exhibits numerical stability...
Software defects are the key factors to evaluate the dependable software. This paper analyzes the attributes of software defects, and applies positive and negative association rules method to the research of software defects. This method can not only overcome the weak point of the traditional association rules method that can only mine the explicit rules, but also output some more meaningful rules...
The traditional method based on "support-confidence" framework could bring a large number of irrelevant or even misleading association rules. In view of the problem of evaluation standards of association rules, we increase interest measure in the evaluation standards, and give the definition of interest measure and positive and negative association rules method based on "interest-support-confidence"...
In the digital multimedia era, it is becoming increasingly important to ensure the integrity and authenticity of the enormous amount of the video data. To detect the effect of frame-deletion, which is one of the common and simple forgery methods in video streams, a new approach based on motion-compensated edge artifact is proposed in this paper. It introduces the factor of motion-compensated edge...
Along with the fast developing of network technology, the number of Web page and user of network search become very enormous. In order to solve the problem of inefficiency and low precision in the search that users have different demand and knowledge background, this paper presents a new text model called vocabulary semantic net which can be applied to build personalized search engine and tested with...
In view of the forecast of the coal spontaneous combustion, an analysis model to forecast the possibility of coal spontaneous combustion was established. Then, an analysis method of positive and negative association rules based on data mining was proposed. Application of the method can mine rules from the explicit and implicit factors related to coal spontaneous combustion. It can not only overcome...
In this paper, we present an FPGA implementation of a Recursive Least Squares adaptive filtering algorithm based on dichotomous coordinate descent iterations. The algorithm is simple for finite precision implementation, requires small chip resources, and exhibits numerical stability. For arbitrary regressors (as in antenna array beamforming), the proposed implementation allows significant increase...
In this paper, we present an FPGA implementation of a dynamically regularized recursive least squares adaptive filtering algorithm based on dichotomous coordinate descent iterations. The algorithm is simple for finite precision implementation, requires small chip resources, and exhibits numerical stability. The proposed implementation allows significant increase in the weight update rate compared...
In recent years, flight delay problem blocks the development of the civil aviation industry all over the world. And delay propagation always is a main factor that impacts the flight's delay. All kinds of delays often happen in nearly-saturated or overloaded airports. This paper we take one busy hub-airport as the main research object to estimate the arrival delay in this airport, and to discuss the...
A RST-resilient watermarking scheme based on invariant features are proposed in this paper. The scale-invariant points of wavelet low-frequency sub-image are used to realize resynchronization after RST (Rotation Scale Translation) attacks. An improved HVS model is adopted to embed multiplicative spread spectrum watermark in DWT (Discrete Wavelet Transform) domain, and optimal water- marking detection...
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